<template>
  <div :class="{ hidden: hidden }" class="pagination-container">
    <el-pagination
      :background="background"
      v-model:current-page="currentPage"
      v-model:page-size="pageSize"
      :layout="layout"
      :page-sizes="pageSizes"
      :pager-count="pagerCount"
      :total="total"
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange" />
  </div>
</template>

<script setup name="Pagination">
  import { scrollTo } from '@/plugins/scroll-to'

  const props = defineProps({
    total: {
      required: true,
      type: Number
    },
    pageSizes: {
      type: Array,
      default() {
        return [10, 20, 30, 50]
      }
    },
    // 移动端页码按钮的数量端默认值5
    pagerCount: {
      type: Number,
      default: document.body.clientWidth < 992 ? 5 : 7
    },
    layout: {
      type: String,
      default: 'total, sizes, prev, pager, next, jumper'
    },
    background: {
      type: Boolean,
      default: true
    },
    autoScroll: {
      type: Boolean,
      default: true
    },
    hidden: {
      type: Boolean,
      default: false
    }
  })

  const currentPage = defineModel('page', { default: 1 })
  const pageSize = defineModel('limit', { default: 10 })
  const emit = defineEmits(['pagination'])

  function handleSizeChange(val) {
    if (currentPage.value * val > props.total) {
      currentPage.value = 1
    }
    pageSize.value = val
    emit('pagination', { page: currentPage.value, limit: val })
    if (props.autoScroll) scrollTo(0, 800)
  }

  function handleCurrentChange(val) {
    currentPage.value = val
    emit('pagination', { page: val, limit: pageSize.value })
    if (props.autoScroll) scrollTo(0, 800)
  }
</script>

<style scoped>
  .pagination-container {
    background: #fff;
    padding: 32px 16px;
  }
  .pagination-container.hidden {
    display: none;
  }
</style>
